Hi. Hope it's ok to chime in. On the mixed signals I think this is a bit of muscle memory to a degree. You and W have a connection and that's not easy to break. I would take it as a good sign that she feels she can talk to you and relax back from anything else. I do think it's nothing more than her feeling comfortable about communicating with you and maybe that's not a bad thing
On her finding someone more compatible , I would imagine that's very hard for you to judge and again , maybe , your mind seeing what it wants to see.
I'm far from an expert and know you have been around for a while but sometimes it's much harder to view your own sitch objectively
